Gallup



(No Model.) 2 Sheets-Sheet 1 YS.N.GALL UP. I I GBARING FOR GHAINGINGISPEED.

No. 295,536.- Patented Mar. .25, 1-884.

. WITNESSES JJv f ENTOR N. PiliRS. mqm-Utrwn p er. Wminmm. Q C- (No Model.) 2 Sheets'Sheet 2.

s. NpGALLUP. GEARING FOR CHANGING SPEED. No. 295.536. PatentedMar. 25, 1884.

N V INVENTOE Mai/km,

.dtiomey UNrrnn STATES SILAS' N. GALLUP, OF MACEDON, NEWV YORK.

GEARING FOR CHANGING SPEED.

SPECIFICATION forming part ofLettersPatent No. 295,536, dated March 25, 1884.

A Application filed January 24, 1884. (No model.)

To all whom it may concern:

Be it known that I, SrLAs N. GALLUP, of

' Macedon, county of WVayne, State of New York,

have invented a new and useful Improvement in Gearing for Changing Speed, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to an improved device or gearing for changing speed, particularly designed for use upon seeding-machines and grain-drills, for varying the speed of the seeddistributing devices, and the quantity to be sown orplanted upon a given area, as may be desired, and it will therefore be described with reference to such application or use of it; but it will be apparent from the following description that its use need not be confined to the particular class of machines referred to, as it may be readily adapted to other uses thanthat named.

tion from one to the other, and in certain details of construction and arrangement of parts for facilitating their adjustment and change of speed, as hereinafter explained.

In the accompanying drawings, Figure 1 is a perspective view of my improved gearing, showing also a portion of the grain-box of a seeding-machine, to which said gearing is applied. Fig. 2 is a rear elevation, partly in section, with the pinion connecting the conegears removed. Fig. 3 is a similar view to Fig.. 2, illustrating the lateral adjustment of one conegear relatively to the other. Fig. 4 is a perspective view, showing a modification in which adjustable cone-pulleys are connected by an endless belt; and Figs. 5 and 6 are detail views, showing the joint in the pinionsupporting arm-one a vertical section through and the other a plan View of said joint.

A-represents a portion of the grain box or hopper of a seeding-machine, to the bottom of which, at one end, are secured pendent angular brackets B B, in which the gear-shafts G, O, and (3 have bearings. The shaft 0, in practice, is the first or main driving-shaft of the machine, on which the carrying and drive wheels are mounted, and in addition to its hearings in the hangers B B will have also the usual bearings in the side frame-timbers of the machine.

Upon the shaft 0 is secured a cone-wheel,

D, or, rather, a series of gears, d, cl, and c, of

different diameters, arranged side by side, in

such relation as to give them, as a whole, the

conical form shown, and. upon the shaft 0 is secured a second cone-gear, E, similar to D, but in reversed position. These gears are located between the hangersB B, and the latter are sufficiently far apart to permit the lateral adjustment of the cone E, for varying the re lation of its gears to those of cone D, such lateral adjustment being effected by the longitudinal adjustment of the shaft 0, as follows:

desired adjustment. Byvibrating the lever 12' the shaft 0 can be adjusted longitudinally in its bearings for moving the cone-wheel laterally as desired. The inner end of the shaft 0 is grooved at 0, and has a pinion, F, feathered to and turning with it, said pinion engaging with and actuating a pinion, F, fast on the shaft 0", which in practice constitutes the distributenwheel shaft, said shaft connecting with and actuating the distributingwheels of the machine in any usual or preferred manner.

The hanger B has a forked bracket, f, se-

cured to it, the fork of which enters a groove, f, in the hub of pinion F, and serves to hold said pinion in working relation to the pinion F when the shaft 0 and its cone-pulley E are adjusted as above described.

' In suitable bearings on the horizontal arms of the brackets'or hangers B and B is mounted a rock-shaft, G, upon which, between said hangers, is rigidly secured a jointed arm, H H, the outer bifurcated portion, H, of which is provided in its outer end with bearings for a pinion, I, adapted to be interposed between said cone-gears D and E, for communicating motion from one to the other. The shaftG has teeth 9 g on its outer end, similar to the teeth on the shaft 0, and the teeth of a quadrant-lever, K, similar to lever b, above de scribed, engage therewith. for effecting the longitudinal adjustment of said shaft G and the lateral adjustment of the arm H H and pinion I, for adapting the latter to engage with' any one of the gears d, d, and c of the cone D, for imparting motion through the gear of coneE in'the same plane therewith to the shaft 0. By reference to Figs. and 6 it will be seen that the joint between the parts H and H of the arm in which the shaft of the pinion I has its bearings is so constructed as to limit the movement of the arm H in one direction. The end of arm H, connected with arm H, is bifurcated, or has short parallel ears h h, through which and the interlapping end of arm H a pin or bolt passes, uniting said ends, and the face or side of arm H has a wedge-shaped rib or piece, h, formed upon or secured to it, which serves to prevent the arm H from falling so low as to throw the pinion I out of working relation to the cone D. The wedge may be made separate from the arm H, and may be secured thereto by a screw passing through a longitudinal slot in the wedge, adapting it to be adjusted to vary the throw of the arm H'or to compensate for wear, as may be required. The direction of movement of cone D is indicated by the arrow in Fig. 1. When the pinion I is thrown into gear with any one of the gears of the cone D, the movement of the latter causes said pinion to immediately roll up into engagement with the opposing gear of cone E, for actuating through the latter the shaft 0. The lateral adjustment of the cone E, as above described, by bringing the gears of said cone into different relation to those of cone D, serves to add to the changes that may be made in the speed of shaft 0, with asmaller number of different-sized gears on the cone than would otherwise be required, thereby reducing the cost of manufacture.

' NVhere cone-pulleys are used, connected by an endless belt, L, as shown inFig. 4, one of the shafts O and G will be mounted in boxes M, adjustable in the hangers B, for setting the shafts nearer to each other or farther apart, for the purpose of accommodating the lateral adjustment of the cone E without necessitating the changing of the belt for one of greater or less length. The boxes M in this construction are movable in slots or ways in the brackets B, and may be adjusted by set-screws m or other suitable means for the purpose.

For changing the speed, the operator by grasping with one hand the pinion-arm H can rock the pinion Iback outof engagement with the cone D, when by rocking the lever K the arms H H will be moved laterally until the pinion I is brought over the desired gear of cone D; when it is allowed to fall into engagement therewith, andis immediately carried by the action of said gear into engagement with the opposing gear of cone E, and serves to actuate the latter in a manner that will be readily understood.

- here the shaft 0' is mounted in adjustable adjustable pinion I, mounted in the jointed arm H H, arranged and operating substan tially as described.

2. The combination of the cone-gears D and E, fast one on the driving-shaft O and the other on the driven shaft 0, one of said shafts being longitudinally adjustable in its bearings, in combination with adjustable bearing-boxes for one of said shafts, and means for effecting the adjustment of said shafts and bearing-boxes, substantially as described.

3. The combination of the cones D and E, the sliding shaft 0', the pinion F, feathered to and sliding on said shaft, and means for adjusting said shaft longitudinally in its bearings, substantially as described.

4. The pinion I, for communicating motion from the cone D to the cone E, and, in combination with said pinion and cones, the jointed arm H H, provided with the knuckleor rib for limiting the movement of the part H of said arm, rock-shaft G, to which said arm is secured, and means for adjusting said shaft andarm, all substantially as described.

5. The combination of. the shafts O and O, the cones D and E, the latter adjustable laterally with its shaft, the pinion F, feathered to and sliding on the shaft 0, means for adjusting said shaft 0 and its cone laterally, the connecting-pinion I, and means for adjusting the latter, all substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 2lst-day of January, A. D. 1884.

. SILAS N. GALLUP.

WVitnesses:

E. H. GALLUP, G. V. KIRKPATRIoK. 

